Calculating machine



Jul .17, 1923- F. TRHNKS CALCULATING MACHINE c 2 Shun-Shut 1 Filed Aug. 2

Fig.3

U1 U2 s n U5 U6 U7 US l a e IL Wall/ZZZ: I" d (L Patented July 17, 1923.

lA-SLBW PATENT OFFlCE.

FRANZ THINKS, OF BRUNSWICK, GEELLANY.

GALCULATIITG IEACHINE.

Apphcation filed Ausust 2, 192-0.

T 0 all whom it may concern Be it known that I, FRANZ TniNKs, a citizen of the Republic of Germany, residing at Brunswick, Republic of Gern'iany, have in vented certain new and useful Improvements in Calculating Machines (tor which I have filed applications in Germany, May 20 and May 28, 1919; Austria, May 10, 1920; Switzerland, lilay 10, 1920; Czechoslovakia, May 22, 1920; Hungary. May 15, 1920: England. May 20 and May 27, 1920), of which the following is a specification.

lily invention relates to improvements in calculating machines, and one of the objects of the improvements is to provide a calculating machine having; a single registcring mechanism, by means of which discount calculations can be performed in such a way, that the net amount and the rebate are simultaneously indicated. lVith this object in view my invention consists in providing the numeral wheels of a section of the registering mechanism with two series of numerals which are displaced relatively to each other and which are arranged in opposite order. In the preferred form oi: the invention 1 provide a shiltable peep hole slide having in each numeral wheel equipped with two series of numerals one peep hole adapted to display one numeral. said slide being adapted to be shifted either by hand or by automatic ,means. A further object of the improvements consists in providing a machine in which the slide or carriage supporting the registering mechanism is relatively light.

In order that the invention be more clearly understood an example embodying the same has been shown in the accom )anying drawings, in which the same letters of reference have been used in all the views to indicate corresponding: parts. In said drawings.

Fig. 1. is a partial section showing" some of the numeral wheels equipped, with two series of numbers.

Fig. 2, is a front view of the peep hole slide the sections of which are shown in coupled position.

Fig. 3, is a similar view showing the sections of the peep hole slide uncoupled.

4, is a diagrammatical front view of the machine,

Serial No. 400,833.

Fig. 5, is a :lront view of the machine with some parts of the cover removed, and

Fig". 6. is a detail view of a modification of a numeral wheel. and cooperating slide section.

For the purpose of explaining the invention reference will he made to a machine of the construction shown in the patents of the United States Nos. 1088485, 1094275, 1160- 015, and 1220030.

In the example shown in Fig. 5 the registeling mechanism comprises 16 places. The numeral wheels 17/ of the left hand section comprising seven numeral wheels are provided each with two series of numerals and the nine numeral wheels forming the right hand section are provided with one series. lVhen making a discount calculation the left hand section of the registering mechanism can be used for calculating the rebate and the right hand section tor simultaneously calculating the net amount. In this operation the peep hole slide a for the left hand is set in position tor displaying the division series of numerals. l

By setting he peep hole slide in the left hand section of numerals in position for displaying the multiplication series. both sections of the registering; mechanism can be used for calmilations with an exceptionally large number ot places.

In a modification oi the invention all the numeral wheels of the registering mechanism are provided with two series oi numbers arranged in opposite order and displaced relatively to each other. Such a ma chine can be used tor sin'iultaneously making' two discount calculations with different gross amounts and equal. percentaae numbers, or for making a discount calculation with a large number ot places. .ln this case the peep hole slide of the registering); mechanism which is used as two independent and adjacent registering mechanisms is made in two sections. so that for example the sectional slide of the left hand part oi: the reg-- istering mechanism can be shifted from the addition and multiplication series ot nu- .JGI'fllS to the subtraction and division series. while the right hand section is not shifted. The peep hole slide is divided at any desired place according to the calculations to be made on the machine.

If it is desired to operate the machine as a whole, for example for performing discount calculations with a large number of places, or for sin'iultaneously making two rebate calculations with different gross amounts and equal percentages, the sections of the peep hole slide are coupled.

In the example shown in Figs. 1 to 4t the registering mechanism It is provided with a peep hole slide made in two sections a and (L The sections are adapted to be coupled by means of a hand operated rocker a mounted on the section a and adapted to engage with a pin 0 in a slit 6 of the section a whereupon the slide a a can be set as a whole either by hand or automatically by the mechanism of the machine. For setting the left hand slide a independently of the section a the sections are uncoupled by means of a hand piece (Z provided thereon.

A simple discount calculation is performed on my improved machine as follows:

ProbZem:-From 800 55 make a deduction of 4%.

Referring to Fig. 4., set in the eighth place of the setting mechanism E the number 1 and turn the crank of the machine in the direction for making a subtraction. There-- by the 9 appears in each of the peep holes from 8 to 13. Now shift the left hand section (1. of the peep hole slide into the position for displaying the division series of numbers of the numeral wheels. Thereby the 0 of the said series are displayed. Remove the number 1' from the setting mechanism E and set in the places 3, 2 and l the gross amount 800. Shift the registering mechanism to the left a distance corresponding to two places and turn the crank in the direction for making additions. Thereby the ulue of 100 S00 is registered on the right hand section of the reg stering mechanism and more particularly on the places 5, 4:, 3, 2, and 1. Reset the revolutions counting mechanism, return the carriage of the registering mechanism into initial position, set in. the higher places 10, 9, 8, of the setting mechanism the gross number 800, and turn the crank four times in the direction corresponding to subtractions. Thereby the value of the percentage is introduced in the machine.

ResuZt:-The revolutions counting mechanism shows the percentage of the rebate, that is 4%, the setting mechanism the gross amount 800, the places 11, 10, 9, 8 the deduction, that is 82, and the places 5, 4, 3, 2, 1 the net amount, that is 768.00 it.

In the preferred form of the invention I provide the registerii'ig mechanism with resetting means of the class shown in the pat ent of the United States Nr. 1022280, so that the set of numeral wheels corresponding to the section a and the set corresponding to the section a can separately be reset.

Therefore I am enabled to erase the netamount displayed in the places (3, 5 4:, 3, and l, and to add to the deduction displayed by the left hand set of peep holes 13, i2, 11, 10, 9, and 8 the result of a second rebate calculation, and so on, so that finally the sum of the deductions is obtained.

lVhile in the example so far described the addition and subtraction series of numbers are disposed in each numeral wheel beside each other, Fig. 6 shows a modification in which the numbers of the series are disposed in one row, the numbers of said. series being alternately arranged in said row. Accordingly the peep hole slide is mounted for being shifted circumferentially of' the numeral wheels.

I claim:

1. In a calculating machine, the combination with the setting mechanism, of a registering mechanism and its numeral wheels provided each with two series of numbers disposed in opposite order and displaced from each other, and a plurality of displaying means adapted for conjoint cooperation with all the numeral wheels and for independent cooperation with a part of said numeral wheels.

2. In a calculating machine, the combination with the setting mechanism, of a registering mechanism and its numeral wheels provided each with two series of numbers disposed in opposite order and displaced from each other, and a plurality of displaying means adapted for conjoint cooperation with all the numeral wheels and for independent cooperation with different sets of the numeral wheels.

In a calculating machine. thecombination with the setting meclianisn'i, of a registering mechanism and its numeral wheels provided each with two series of numbers disposed in opposite order and displaced from each other, and a plurality of displaying means adapted for conjoint cooperation with all the numeral wheels and for independent coo 'ieration with a part of the numeral wheels, and means for resetting the numeral wheels which are adapted for independent coopcration with said displaying means.

4. In a calculating machine, the combina tion with the setting mechanism, of a registering mechanism and its numeral wheels provided each with two series of numbers disposed in opposite order and displaced from each other, and a plurality of display ing means adapted for conjoint cooperation with all the numeral wheels and for independent cooperation with different sets of the numeral wheels, and independent resetting means for each of said sets of numeral wheels.

5. In a calculating machine, the combination with the setting mechanism, of a registering mechanism and its numeral Wheels, at least a part of said numeral. disks being provided each with two series of numbers dispose-cl in opposite order and displaced from each other a peep hole slide cooperat ing with said numeral Wheels and made in two sections one for the numeral Wheels provided with two series of numbers, and means for connecting and disconnecting said sections. 10 In testimony whereof I have stlixecl my signature in presence of two witnesses.

FRANZ TRINBJ.

\Vitnesses MAX MULLER 301101111, ADoLn TRUYEN. 

